“…This study appoints two classes as a random sampling that will produce final data in the form of scores obtained through the final test at the end of learning (Rahmawati, Lestari, & Umam, 2019).Problem solving based learning can optimize student thinking through systematic team processes with group work (Rodriguez-ponce & Rodriguez-ponce, 2019), so students can drill, test and develop thinking skills continuously ( Aptitude Treatment Interaction model can be carried out with the initial treatment stage given by the teacher to stimulate students to think creatively (Felisardo, Llinas-audet, & Amestica-rivas, 2019). After the initial treatment is given, the next step is the teacher divides students into groups, which then the teacher will give intensive treatment to each group (Sriyakul et al, 2019). Giving this treatment can improve students' creative thinking abilities.…”